ruby on rails - Hash to_json: how can I skip the key and list only the values in the JSON response? -



ruby on rails - Hash to_json: how can I skip the key and list only the values in the JSON response? -

the result of activerecord query array of hashes. if convert json output, keys of hash (the db column names) repeated in json result every row. e.g. dailystats.all.to_json gives back:

[ {\"statisticsdate\":1360454400000,\"storagetoptempavg\":48.6}, {\"statisticsdate\":1360540800000,\"storagetoptempavg\":49.0}, {\"statisticsdate\":1360627200000,\"storagetoptempavg\":48.4} ]

however omit column names repeated , this:

[ {1360454400000:48.6}, {1360540800000:49.0}, {1360627200000:48.4} ]

is there simple way or should build info converter?

you should able map info before convert json:

dailystats.all.map {|item| {item[:statisticsdate] => item[:storagetoptempavg]}}.to_json

ruby-on-rails ruby json rails-activerecord

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